School officials said ICE agents tried to enter Hamline Elementary Friday morning, spurring panic. The Secret Service later claimed responsibility.

Chicago Public Schools officials said U.S. Immigration and Customs Enforcement agents were turned away after arriving at a Southwest Side elementary school Friday morning, but ICE and Homeland Security officials have denied the claims.

The U.S. Secret Service says its agents visited a Chicago elementary school while investigating a threat. School officials mistakenly said hours before that U.S.

The rumor appeared to spread following an all-call sent to parents that encouraged them to update emergency contact information "immediately."

The operation began at a home and later extended to the school grounds.The agency stressed that it only investigates threats, does not enforce immigration laws.